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Comprehensive Characterization of Energy Saving and Environmental Benefits of Campus Photovoltaic Buildings

Author

Listed:
  • Jie Yang

    (School of Petroleum Engineering, Changzhou University, Changzhou 233016, China)

  • Baorui Cai

    (School of Petroleum Engineering, Changzhou University, Changzhou 233016, China)

  • Jingyu Cao

    (College of Civil Engineering, Hunan University, Changsha 410082, China)

  • Yunjie Wang

    (School of Petroleum Engineering, Changzhou University, Changzhou 233016, China)

  • Huihan Yang

    (Department of Chemical Engineering, University College London, London WC1E 6BT, UK)

  • Ping Zhu

    (College of Civil Engineering, Jiangsu Urban and Rural Construction College, Changzhou 213147, China)

Abstract

The development of campus photovoltaic buildings is a promising way to solve the problem of high energy consumption in colleges and universities. However, comprehensive study on their energy saving and environmental benefits is still insufficient. In this study, a theoretical model of a photovoltaic building roof system was preliminarily built, and the main factors affecting the power generation of campus photovoltaic buildings were analyzed. Furthermore, an experimental test platform for the campus photovoltaic building system was built, and a dynamic grid-connected strategy of “spontaneous self-use, surplus electricity connected to the grid” was creatively proposed, which points out that the grid connection rate in winter and summer vacations are about 15% and over 40%, respectively, and the annual grid connection rate is 25%. The result shows that the electricity input of the campus photovoltaic building can bear nearly 30% of the school’s annual electricity supply, which reduces the comprehensive energy consumption per unit area and per capita comprehensive energy consumption of the campus by more than 20%. The economic and environmental benefits of the 130,000 square meter campus photovoltaic building in the article are 38.8 million CNY and 20.12 million CNY, respectively, and the static investment payback period is about 7 years. The results show considerable reference value to the upgrading of campus photovoltaic buildings.

Suggested Citation

  • Jie Yang & Baorui Cai & Jingyu Cao & Yunjie Wang & Huihan Yang & Ping Zhu, 2023. "Comprehensive Characterization of Energy Saving and Environmental Benefits of Campus Photovoltaic Buildings," Energies, MDPI, vol. 16(20), pages 1-16, October.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:20:p:7152-:d:1263006
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    1. Lizhen Gao & Shidong Wang & Mingqiang Mao & Chunhui Liu & Tao Li, 2024. "Study on the Energy Consumption Characteristics and the Self-Sufficiency Rate of Rooftop Photovoltaic of University Campus Buildings," Energies, MDPI, vol. 17(14), pages 1-16, July.

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